package com.wanxi.servlet.user;

import com.alibaba.fastjson.JSONObject;
import com.wanxi.dto.ResultDTO;
import com.wanxi.model.UserModel;
import com.wanxi.service.UserService;
import com.wanxi.service.impl.UserServiceImpl;
import com.wanxi.util.Tool;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebServlet("/login")
public class LoginServlet extends HttpServlet {
    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        //登录其实做的是查询：
        //        1.乱码处理
        req.setCharacterEncoding("UTF-8");
        resp.setCharacterEncoding("UTF-8");
//        2.得到前端的值
        String username = req.getParameter("username");
        String password = req.getParameter("password");
        String code = req.getParameter("code");
//        String vCode = (String) req.getSession().getAttribute("vCode");
        String vCode = (String) req.getSession().getAttribute("vCode:" + req.getSession().getId());
//        3.封装到model
        UserModel model = UserModel.builder()
                .name(username)
                .password(password)
                .code(code)
                .vCode(vCode)
                .build();
//        4.调用服务逻辑层
        UserService userService = new UserServiceImpl();
        ResultDTO resultDTO = userService.login(model);
        if ("success".equals(resultDTO.getMsg())) {
            req.getSession().setAttribute("username", username);
//            req.getSession().setAttribute(username, username);
        }
//        5.将结果返回给前端
//        以后返回给前端永远是对象：而且是json对象，所以需要将数据强制转换为json对象
//        将数据转换为json对象有很多种方式，fastjson
        resp.getWriter().println(JSONObject.toJSONString(resultDTO));
    }
}
